public class Student {
    String name;
    String sex;
    int age;
    void study(){
        System.out.println("我爱大家！");
    }
    void setAge(int age){
        System.out.println("年龄:"+age);
    }
    void school(){
        System.out.println("I love school.");
    }
    void introducemyself(){
        System.out.println("我的名字："+name+"性别:"+sex);
    }
}
